Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
1997
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1997

[Date Index] [Thread Index] [Author Index]

Search the Archive

Integrate got slower in Version 3.0/Example

  • To: mathgroup at smc.vnet.net
  • Subject: [mg8945] Integrate got slower in Version 3.0/Example
  • From: Elias Saab <mathes at math.missouri.edu>
  • Date: Mon, 6 Oct 1997 01:59:15 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

In version 2.2

In[1]:= Integrate[Sqrt[R^2-x^2-y^2],{x,-R,R},
        {y,-Sqrt[R^2-x^2],Sqrt[R^2-x^2]}]//Timing        


                            3
                      2 Pi R
Out[1]= {5.17 Second, -------}
                         3

In Version 3.0
Integrate[Sqrt[R^2-x^2-y^2],{x,-R,R},
	{y,-Sqrt[R^2-x^2],Sqrt[R^2-x^2]}]//Timing
Integrate::"gener": "Unable to check convergence"


                           3   
                      2 Pi R
Out[1]= {32.8 Second, -------}
                         3

I mentionned this to Wolfram before the release of 3.0. It seems
that nothing has been done to correct this.

Elias Saab



  • Prev by Date: Re: trig expansion
  • Next by Date: Re: Re: Sequence is funny !
  • Previous by thread: Compiler and sending output
  • Next by thread: Re: Integrate got slower in Version 3.0/Example